Home / 13,628.30-18,789.68-9,144.94

Finding the Fourth Proportional to 13,628.30, 18,789.68 and 9,144.94

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Solution

The fourth proportional to 13,628.30, 18,789.68 and 9,144.94 is: 12,608.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.30 : 18,789.68 = 9,144.94 : x
  2. Step 2: Convert to fraction form
    13,628.30/18,789.68 = 9,144.94/x
  3. Step 3: Cross multiply
    13,628.30x = 18,789.68 × 9,144.94
  4. Step 4: Simplify right side
    13,628.30x = 171,830,496.22
  5. Step 5: Solve for x
    x = 171,830,496.22/13,628.30
  6. Step 6: Final answer
    x = 12,608.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.